Answer:
The most likely personality disorder to consider is: Paranoid Personality Disorder.
Explanation:
Paranoid Personality Disorder, affects people perception of reality and it is associated to a fear of harm that a person has of other people. In this case she is suspicious of others, and doesn't have any close friends, which means she can't trust people for the same reason. This disorder has a magical thinking, lacking reference of reality. It affects how people relates with others.